87196235842 has 4 divisors (see below), whose sum is σ = 130794353766. Its totient is φ = 43598117920.

The previous prime is 87196235827. The next prime is 87196235857. The reversal of 87196235842 is 24853269178.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (87196235827) and next prime (87196235857).

It can be written as a sum of positive squares in only one way, i.e., 87130642041 + 65593801 = 295179^2 + 8099^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21799058959 + ... + 21799058962.

Almost surely, 2^87196235842 is an apocalyptic number.

87196235842 is a deficient number, since it is larger than the sum of its proper divisors (43598117924).

87196235842 is a wasteful number, since it uses less digits than its factorization.

87196235842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43598117923.

The product of its digits is 5806080, while the sum is 55.

The spelling of 87196235842 in words is "eighty-seven billion, one hundred ninety-six million, two hundred thirty-five thousand, eight hundred forty-two".